Alireza Abadi
Associate Professor of Biostatistics, Department of Community Medicine, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran AND Social Determinants of Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
[ 1 ] - Gender-based Differences in Associations between Attitude and Self-esteem with Smoking Behavior among Adolescents: A Secondary Analysis Applying Bayesian Nonparametric Functional Latent Variable Model
Background: Different patterns of gender-based relationships between attitude toward smoking and self-esteem with smoking behavior have reported. However, such associations may be much more complex than a simply supposed linear relationship. We aimed to propose a method of providing hand details on the total and gender-based scenarios of the relationships between attitude toward smoking and sel...
[ 2 ] - بررسی عوامل موثر بر انگیزش شغلی اعضای هیات علمی دانشگاه علوم پزشکی شهید بهشتی بر اساس تئوری انگیزشی دو عاملی هرزبرگ در سال 1394
Background and objective: The most important factor for success in every organization, s its human resources. Human resources with the power of creativity, imagination, faith and commitment, have a great impact on the performance of the organization. University faculty members are the main pillars of human resources and affect the development of universities to promote academic stan...
[ 3 ] - برآورد اثر مصرف غذای تکمیلی در هر یک از ماه های پس از تولد کودک تا 2 سالگی روی بروز افت وزن: استفاده از مدل نرخ با ضرایب وابسته- زمان برای رخ دادهای بازگشتی
سابقه و هدف: افت وزن در کودکان از جمله اختلالاتی است که ممکن است به دفعات برای کودک اتفاق بی‌افتد، لذا در دسته‌ی رخ‌دادهای بازگشت‌پذیر قرار می‌گیرد.هدف این مطالعه، استفاده از مدل نرخ حاشیه‌ای برای رخ‌دادهای بازگشتی و هم‌چنین مدل نرخ با ضرایب وابسته-زمان برای بررسی عوامل خطرساز افت وزن بود. مواد و روش ها: در این مطالعه از اطلاعات موجود در پرونده‌های بهداشتی 1673 کودک که در سال‌های 85 و 86 ...
[ 4 ] - مقایسه‌ی اثر مصرف مکمل کلسیم و شیر کم چربی بر اجزای سندروم متابولیک در زنان دارای اضافه وزن یا چاق
مقدمه: در پژوهش‌های پیشین پیشنهاد شده رژیم‌‍‌های غذایی پر کلسیم سبب بهبود پروفایل چربی، فشار خون بالا و مقاومت انسولینی می‌گردند. بنابراین پژوهش حاضر با هدف بررسی اثر مصرف شیر کم چربی و مکمل کلسیم بر اجزای سندروم متابولیک در زنان دارای اضافه وزن یا چاق انجام گرفت. مواد و روش‌‌ها: در پژوهش بالینی حاضر 75 زن غیر یائسه دارای اضافه وزن یا چاق، برای 8 هفته به طور تصادفی به یکی از سه گروه زیر اختصاص ...
[ 5 ] - Effect of Folic Acid on serum Leptin, Grehlin concentration, and feed intake in male Wistar rats
Introduction: There is no comprehensive study on the effect of Folate on food intake therefore the present study was carried out to determine the effect of Folate supplementation on serum concentrations of Leptin and Grehlin and food intake in male Wistar rats. Methods: The study was carried out for 42 days during which the animals were weighed weekly their food and water intakes were measu...
[ 6 ] - Comparing Multi-level and Ordinary Logistic Regression Models in Evaluating Factors Related to Periodontal Clinical Attachment Loss
Background and Objectives: Periodontal disease is one of the most common oral health problems. Clinical attachment loss occurs in sever periodontal cases (CAL>3). In this study, we applied a classic regression model and the models that consider the hierarchical structure of the data to estimate and compare the effect of different factors on CAL. Methods: This cross-sectional study was perfo...
[ 7 ] - The effect of massage and shaking on infants with colic in a clinical trial concerning the misspecification
Background: Statistical models are used to investigate the relationship between variables in statistical studies. Considering the variety of statistical models, finding the most suitable model is a complex work. This study aimed to compare different models in the treatment of infants' colic and the misspecification of specificity. Methods: This randomized clinical trial was conducted on 100 in...
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